The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 2019
Filed:
Feb. 17, 2016
General Electric Company, Schenectady, NY (US);
Dipankar Deb, Ahmedabad, IN;
Manthram Sivasubramaniam, Bangalore, IN;
Prashant Srinivasan, Bangalore, IN;
Sharath Sridhar Aramanekoppa, Bangalore, IN;
Prem Kumar Patchaikani, Bangalore, IN;
Sachin Shivajirao Kulkarni, Bangalore, IN;
Sebastian Walter Freund, Garching, DE;
Jassin Marcel Fritz, Munich, IN;
Georgios Bikas, Garching, DE;
James Henry Yager, Northville, MI (US);
Shashi Kiran, Lawrence Park, PA (US);
GE Global Sourcing LLC, Norwalk, CT (US);
Abstract
Systems and methods are provided for controlling exhaust gas recirculation (EGR). In one example, an engine system includes a first EGR valve coupling an exhaust manifold to an engine exhaust system, a second EGR valve coupling the exhaust manifold to an engine intake system, and a control unit. The control unit selectively adjusts a position of the first EGR valve based on a target amount, and adjusts a position of the second EGR valve based on the target amount and a position of the first EGR valve. Responsive to a first degradation condition of the first EGR valve, the control unit adjusts the position of the second EGR valve based on the target amount and based on a pressure of the first exhaust manifold, and responsive to a second degradation condition of the first EGR valve, adjusts the position of the second EGR valve based on the target amount.